[codecoward]

Ok, that makes sense about the relay. I don't really want to use a relay though, and I want DNS Lookups enabled. However, I'm new enough at this that I am not sure exactly how to do that.

Basically, my server is a clean install of FC4 with nothing else on it but the minimal install configuration and Zimbra. It is behind a Cisco firewall. The internal IP address is 192.168.1.3. The public IP address is something else. I have the Cisco port forwarding ports 25, 7071, 80, 110, and a few others to the internal IP address.

Inside my hosts file, I have three entries:

127.0.0.1    localhost.localdomain localhost
192.168.1.3    mail.example1.com
192.168.1.3    mail.example2.com

I want to use the server as a single box for multiple domains (that I control) to send email from, and receive email to. I have valid MX records for each of the domains listed in the hosts file, and my ISP has PTR records for the domains listed in the hosts file. When doing a dig, dig -x, or host for the hosts listed in the hosts file, they all correctly give the external ip.

So, with all of that information, how do I receive mail to my box with DNS lookups turned on? Do I have to have an internal DNS mechanism (such as BIND) running to translate that the external IP is actually the internal IP? Is there some other setting that I have missed?

I am also still having trouble authenticating to the server via an external client. I noticed one other strange thing in the zimbra.log when I do a zmcontrol startup or shutdown.

#on shutdown
Oct 31 21:08:02 mail zimbramon[28782]: 28782:err: SMTP RESPONSE: FAILURE from localhost: problem connecting to "localhost", port 25: Connection refused
Oct 31 21:08:02 mail zimbramon[28782]: 28782:err: SMTP RESPONSE: FAILURE from localhost: problem connecting to "localhost", port 25: Connection refused

#on startup
Oct 31 21:09:08 mail zimbramon[29100]: 29100:err: SMTP RESPONSE: FAILURE from localhost: problem connecting to "localhost", port 25: Connection refused
Oct 31 21:09:39 mail zimbramon[29100]: 29100:err: SMTP RESPONSE: FAILURE from localhost: problem connecting to "localhost", port 25: Connection refused

If you listen closely, you can probably hear the sound of my head banging against a wall, all the way in San Mateo CA. (or wherever it is that you are located )